Thesis (Ph. D.)--Biomedical Engineering, Georgia Institute of Technology, 2007. / David Harrison, Committee Member ; Ravi Bellamkonda, Committee Member ; Larry McIntire, Committee Member ; Oskar Skrinjar, Committee Member ; W. Robert Taylor, Committee Chair ; Robert Guldberg, Committee Chair.

Cardiovascular disease is one of the leading causes of the mortality in the western world. Many imaging modalities have been used to diagnose cardiovascular diseases. However, each has different forms of noise and artifacts that make the medical image analysis field important and challenging. This thesis is concerned with developing fully automatic segmentation methods for cross-sectional coronary arterial imaging in particular, intra-vascular ultrasound and optical coherence tomography, by incorporating prior and tracking information without any user intervention, to effectively overcome various image artifacts and occlusions. Combinatorial optimisation methods are proposed to solve the segmentation problem in polynomial time. A node-weighted directed graph is constructed so that the vessel border delineation is considered as computing a minimum closed set. A set of complementary edge and texture features is extracted. Single and double interface segmentation methods are introduced. Novel optimisation of the boundary energy function is proposed based on a supervised classification method. Shape prior model is incorporated into the segmentation framework based on global and local information through the energy function design and graph construction. A combination of cross-sectional segmentation and longitudinal tracking is proposed using the Kalman filter and the hidden Markov model. The border is parameterised using the radial basis functions. The Kalman filter is used to adapt the inter-frame constraints between every two consecutive frames to obtain coherent temporal segmentation. An HMM-based border tracking method is also proposed in which the emission probability is derived from both the classification-based cost function and the shape prior model. The optimal sequence of the hidden states is computed using the Viterbi algorithm. Both qualitative and quantitative results on thousands of images show superior performance of the proposed methods compared to a number of state-of-the-art segmentation methods.

Made available in DSpace on 2014-06-11T19:23:00Z (GMT). No. of bitstreams: 0 Previous issue date: 2012-10-30Bitstream added on 2014-06-13T19:28:41Z : No. of bitstreams: 1 velo_af_me_botib.pdf: 2027153 bytes, checksum: 75d4e59757a87a168a8558deb0356dce (MD5) / Os métodos que utilizam radiações ionizantes ainda são os mais empregados por serem considerados mais “baratos” e sobretudo, muito eficientes quando utilizados com controle e qualidade. Novos sistemas de aquisição, registro e armazenamento de imagens estão sendo desenvolvidos, dentre os quais podemos citar a radiologia computacional e digital. Este método de diagnóstico pode proporcionar maior qualidade da imagem, favorecendo a não repetição de exames de modo a contribuir com a redução de dose para o paciente, quando utilizado com controle e qualidade. A otimização da relação risco-benefício é considerada de grande avanço no que diz respeito à radiologia convencional, entretanto essa não é a realidade da radiologia computacional e digital, onde não dispomos de normas e protocolos estabelecidos para otimização da imagem, dose e custo para a rotina clinica de radiodiagnóstico. Esta pesquisa teve como objetivo a otimização de imagens radiográficas computacionais de tórax (na projeção Póstero Anterior - PA). A escolha por essa modalidade de exame se deve ao fato deste ser o exame convencional mais realizado na rotina clínica. Para atingir esse objetivo foram utilizados fantomas homogêneos que simulam características de absorção e espalhamento da radiação próxima à do tórax de um paciente padrão, com aproximadamente 1,73m e 75 kg. Neste estudo o Fantoma homogêneo Equivalente ao Paciente (FEP) foi utilizado na calibração do sistema de imagem computacional, de modo a obter índices de exposições (lgMs) previamente definidos para cada tensão (kVp). As técnicas calibradas foram aplicadas em um fantoma antropomórfico (RANDO). As imagens obtidas foram avaliadas, por um especialista da área de radiologia, o qual identificou a melhor imagem (imagem ótima), para cada kVp, para determinadas possíveis anomalias no pulmão... / The ionizing radiation methods are still the most commonly used for being considered cheaper and very efficient when used with control and quality. New acquisition, recording and image storage systems are being developed among which we can mention the Computed Radiography and Digital Radiography. This method of diagnosis might provide higher image quality, favoring unrepeated examinations in order to contribute to the patient dose reduction when used with control and quality. The risk-benefit rate optimization is considered a breakthrough in computed radiology, however it’s not the reality of the computed and digital image, which do not have well established norms and protocols for image, dose and expense optimization in the radiodiagnostic clinical routine. This research had as objective the optimization of computed radiographic images of the chest (anterior - posterior projection). The choice of this modality exam was due the fact that it is the most realized on clinical routine. To achieve this objective it was used an homogeneous phantom that simulates spreads and absorption characteristics of radiation next to a standard patient, with 1, 73 m and 75 Kg approximately. On this study, the Phantom Equivalent of Patient (PEP) was used to calibrate the computational image system, acquiring exposure index (lgMs) previously defined to each kVp. The calibrated techniques were applied on an Anthropomorphic Phantom (RANDO). The images were evaluated by a radiology specialist whose identified the best image (optima image) for each kVp to determine possible anomalies on lung / bones lesions using the Visual Gradual Assessment (VGA). After the optima images selection, the radiologist used the VGA relative to select the image standard, where it stood out by its “image beauty”. Based on 3D principle (Dose, Diagnostic, Dollar), respecting this order... (Complete abstract click electronic access below)

Made available in DSpace on 2014-06-11T19:29:11Z (GMT). No. of bitstreams: 0 Previous issue date: 2012-02-02Bitstream added on 2014-06-13T19:58:58Z : No. of bitstreams: 1 assis_mmq_me_botfmvz.pdf: 368675 bytes, checksum: 394fd217adc39ff00a862c9afe703350 (MD5) / Universidade Estadual Paulista (UNESP) / O exame ultrassonográfico modo B é procedimento diagnóstico realizado par a avaliação renal, mas é com o Dúplex Doppler que se obtêm informações da função do fluxo sanguíneo intrarrenal, dopplerfluxometria e índice de resistividade, dados adicionais importantes para o diagnóstico de nefropatias. O uso potencial está relacionado ao fato de que a maior parte das alterações agudas não promove mudanças detectáveis ao modo B, mas que combinadas à avaliação da vascularização, podem indicar doença renal. O presente trabalho teve por objetivo encontrar valores de normalidade de dopplerfluxometria, índice de resistividade e aceleração das artérias renal, interlobar e arqueada em animais jovens, adultos e idosos do mesmo porte. Os valores de IR para Gi na artéria renal 0,68+_0,08, interlobar 0,66+_0,05 e arqueada 0,66+_0,05; para G2 artéria renal 0,67+_0,03, interlobar 0,62+_0,06 e arqueada 0,62+_0,06: e no G3 artéria renal 0,69+_0,04, interlobar 0,69+_0,05 e arqueada 0,66+_0,05 e arqueada 0,66+_0,06. Os valores de VPS para G1 na artéria renal 71,7+_0,5 cm/s, interlobar 35,5+_8,3 cm/s e arqueada 36,4+_4,6 cm/s: G2 na artéria renal 45+_8,2 cm/s, interlobar 37,6+_11,3 cm/s e arqueada 32,3+_8,8 cm/s; e no G3 na artéria renal 51,2+_16,1 cm/s interlobar 39+_12,7 cm/s e arqueada 30,8+_14,4 cm/s. Para a variável VDF no G1 artéria renal 19,5+_5,1 cm/s interlobar 12,6+_3,6 cm/s e arqueada 11,9+_3,4 cm/s; no G2 artéria renal 16,5+_4,6 cm/s, interlobar 14,1+_4,9 cm/s e arqueada 11,3+_4,6 cm/s; e no G3 artéria renal 15,6+_2,6 cm/s, interlobar 11,7+_2,5 cm/s e arqueada 9,8+_3,1 cm/s. A aceleração foi do G1 na... / The B-mode ultrasonography is a disgnostic procedure performed to assess renal function but with Duplex Doppler information is obtained that the role of intrarenalblood flow, and Doppler resistivity index, additional data important for the diagnosis of kidney disease. The potential use is related to the fact that most of the acute changes does not promote detectable changes to the B mode, but that the combined evaluation of vascularization may indicate kidney disease. This study aimed to find normal values for Doppler, resistivity index and acceleration of renal arteries, interlobar and arcuate in young animals, adults and seniors of the same size. The values for G1 in the renal artery 0,68+_0,08, 0,66+_0,05 and interlobar arcuate 0,66+_0,05, G2 0,67+_0,03 renal artery, interlobar 0,62+_0,06 and arched 0,62+_0,06: G3 0,69+_0,04 renal artery, interlobar 0,69+_0,05 and arcuate 0,66+_0,06 VPS values for G1 in the renal artery 71,7+_20,5 cm/s, interlobar 35,5+_8,3cm/s and 36,4+_4,6cm/s arched; in G2 in the renal artery 45+_8,2 cm/s, interlobar 37,6+_11,3 cm/s nd arched 32,3+_8,8 cm/s, and G3 in the renal artery 51,216,1 cm/s, interlobar 12,7+_39 cm/s and arched 30,8+_14,4 cm/s. For the variable renal artery EDV in G1 19,5+_5,1 cm/s interlobar 12,6+_3,6 cm/s and 11,9+_3,4 arched cm/s; G2 renal artery 1,5+_4,6 cm/s, interlobar 14,1+_4,9 cm/s and arched 11,3+_4,6 cm/s; and G3 renal artery 15,6+_2,6 cm/s, 11,7+_ interlobar 2,5 cm/s and arched 9,8 +_ 3,1 cm/s. The accelerationj of G1 was 984 +_ 3121,7 cm/s² renal artery... (Complete abstract click electronic access below)

Orientador: Jose Ricardo de Arruda Miranda / Coorientador: Diana Rodrigues de Pina / Banca: Sério Marrone Ribeiro / Banca: Homero Schiabel / Resumo: Os métodos que utilizam radiações ionizantes ainda são os mais empregados por serem considerados mais "baratos" e sobretudo, muito eficientes quando utilizados com controle e qualidade. Novos sistemas de aquisição, registro e armazenamento de imagens estão sendo desenvolvidos, dentre os quais podemos citar a radiologia computacional e digital. Este método de diagnóstico pode proporcionar maior qualidade da imagem, favorecendo a não repetição de exames de modo a contribuir com a redução de dose para o paciente, quando utilizado com controle e qualidade. A otimização da relação risco-benefício é considerada de grande avanço no que diz respeito à radiologia convencional, entretanto essa não é a realidade da radiologia computacional e digital, onde não dispomos de normas e protocolos estabelecidos para otimização da imagem, dose e custo para a rotina clinica de radiodiagnóstico. Esta pesquisa teve como objetivo a otimização de imagens radiográficas computacionais de tórax (na projeção Póstero Anterior - PA). A escolha por essa modalidade de exame se deve ao fato deste ser o exame convencional mais realizado na rotina clínica. Para atingir esse objetivo foram utilizados fantomas homogêneos que simulam características de absorção e espalhamento da radiação próxima à do tórax de um paciente padrão, com aproximadamente 1,73m e 75 kg. Neste estudo o Fantoma homogêneo Equivalente ao Paciente (FEP) foi utilizado na calibração do sistema de imagem computacional, de modo a obter índices de exposições (lgMs) previamente definidos para cada tensão (kVp). As técnicas calibradas foram aplicadas em um fantoma antropomórfico (RANDO). As imagens obtidas foram avaliadas, por um especialista da área de radiologia, o qual identificou a melhor imagem (imagem ótima), para cada kVp, para determinadas possíveis anomalias no pulmão... (Resumo completo, clicar acesso eletrônico abaixo) / Abstract: The ionizing radiation methods are still the most commonly used for being considered cheaper and very efficient when used with control and quality. New acquisition, recording and image storage systems are being developed among which we can mention the Computed Radiography and Digital Radiography. This method of diagnosis might provide higher image quality, favoring unrepeated examinations in order to contribute to the patient dose reduction when used with control and quality. The risk-benefit rate optimization is considered a breakthrough in computed radiology, however it's not the reality of the computed and digital image, which do not have well established norms and protocols for image, dose and expense optimization in the radiodiagnostic clinical routine. This research had as objective the optimization of computed radiographic images of the chest (anterior - posterior projection). The choice of this modality exam was due the fact that it is the most realized on clinical routine. To achieve this objective it was used an homogeneous phantom that simulates spreads and absorption characteristics of radiation next to a standard patient, with 1, 73 m and 75 Kg approximately. On this study, the Phantom Equivalent of Patient (PEP) was used to calibrate the computational image system, acquiring exposure index (lgMs) previously defined to each kVp. The calibrated techniques were applied on an Anthropomorphic Phantom (RANDO). The images were evaluated by a radiology specialist whose identified the best image (optima image) for each kVp to determine possible anomalies on lung / bones lesions using the Visual Gradual Assessment (VGA). After the optima images selection, the radiologist used the VGA relative to select the image standard, where it stood out by its "image beauty". Based on 3D principle (Dose, Diagnostic, Dollar), respecting this order... (Complete abstract click electronic access below) / Mestre

Thesis (DTech (Radiology))--Cape Peninsula University of Technology, 2016. / The aim of this study was to provide evidence basedforecast for radiology demand in Zimbabwe that would support policies aimed at optimising radiology resource allocation and utilisation. This was upon the realisation that the Ministry of Health and Childcare required such forecast in order to ensure equitable, accessible and quality health services as prescribed in the 2009-2015 National Health Strategy as well as in Section 29 and 76 of the Zimbabwean constitution. On the international perspective, many researchers have reported stable high demand for radiology services giving rise to long waiting lists and backlogs. In the United Kingdom’s National Health Services (NHS), there is general consensus that these waiting lists are caused by variation mismatches between capacity and demand for radiology services. Elsewhere, it has been reported that skill mix, role changes, dynamic nature of radiography teaching and learning, technology diffusion, service transaction time, overutilisation, and unjustified exposures are key drivers of high demand for radiology services. It has long been established that demand for radiology services is stochastic in nature, and therefore planning of future investments in radiology must be guided by an understanding of how these variables interact to model the criterion variable. However, there is paucity of information pertaining to key aspects of legitimate radiology demand forecasts. Formulation of these fundamental concepts formed the impetus of this study. A document review, interviews and non-participatory observations revealed that justification of radiology examinations, dynamic nature of radiography teaching and learning, diffusion of extended roles and technology, equipment and personnel capacity, and most importantly service transaction time all had an impact on the demand for radiology services in Zimbabwe. Limited diffusion of extended roles and technology had increased over a ten year period. Observed role changes were informal additions to the procedures normally carried out by radiographers and these were not supported by formal education. Consistent with global concerns, over utilisation and unjustified requests were a national concern. In situations where capacity outweighed demand, there was evidence that internal management of radiology departments was responsible for most variation mismatches which then gave rise to long waiting times.

Thesis (MSc (Radiography))--Cape Peninsula University of Technology, 2018. / Background and objectives The issue of patient doses received during fluoroscopy procedures, raised concerns for the researcher, as there may have been probable past skin injuries or deterministic injuries that may not have been documented. Amongst the radiology staff, there was very little understanding of what the actual dose area product (DAP) value means in real terms of effective dose and entrance skin dose. The aims of the study were to: i) Measure the radiation doses received by the patient and determine a simple means of defining the DAP value to the radiographer in terms of the dose received by the patient. ii) Determine the effective dose, entrance skin dose and the relationship with the DAP value to assist with developing a conversion co-efficient for dose indicators. Method Direct radiation dose measurements can be obtained through DAP meters attached to the diagnostic equipment, but the DAP value is not an direct indication of the effective dose received by the patient. The DAP values captured from the DICOM header information for barium fluoroscopic procedures at a large tertiary was analysed and Diagnostic Reference levels (DRL) were determined for barium swallow, meal and enema procedures. The effective and skin doses were calculated by means of the Monte Carlo program. The results were compared to published values. The relationship between the entrance skin dose and the DAP value was determined and conversion factors were calculated. Results Correlation between the DAP and entrance skin dose and comparative 75th percentile threshold values were determined for barium swallow (BaS), barium meal (BaM) and barium enema (BaE) procedures. Effective to DAP conversation factors for BaS, BaM and BaE are 0.19, 0.26 and 0.60 respectively and 0.15, 0.11 and 0.14 for entrance skin to DAP. Conclusion The the research showed the relationship between the effective dose, entrance skin dose and DAP value and a simple, practical and applicable explanation of the DAP value by means of conversion factors.

Orientador: Maria Jaqueline Mamprim / Banca: Luiz Henrique de Araújo Machado / Banca: Tilde Rodrigues Froes / Resumo: O exame ultrassonográfico modo B é procedimento diagnóstico realizado par a avaliação renal, mas é com o Dúplex Doppler que se obtêm informações da função do fluxo sanguíneo intrarrenal, dopplerfluxometria e índice de resistividade, dados adicionais importantes para o diagnóstico de nefropatias. O uso potencial está relacionado ao fato de que a maior parte das alterações agudas não promove mudanças detectáveis ao modo B, mas que combinadas à avaliação da vascularização, podem indicar doença renal. O presente trabalho teve por objetivo encontrar valores de normalidade de dopplerfluxometria, índice de resistividade e aceleração das artérias renal, interlobar e arqueada em animais jovens, adultos e idosos do mesmo porte. Os valores de IR para Gi na artéria renal 0,68+_0,08, interlobar 0,66+_0,05 e arqueada 0,66+_0,05; para G2 artéria renal 0,67+_0,03, interlobar 0,62+_0,06 e arqueada 0,62+_0,06: e no G3 artéria renal 0,69+_0,04, interlobar 0,69+_0,05 e arqueada 0,66+_0,05 e arqueada 0,66+_0,06. Os valores de VPS para G1 na artéria renal 71,7+_0,5 cm/s, interlobar 35,5+_8,3 cm/s e arqueada 36,4+_4,6 cm/s: G2 na artéria renal 45+_8,2 cm/s, interlobar 37,6+_11,3 cm/s e arqueada 32,3+_8,8 cm/s; e no G3 na artéria renal 51,2+_16,1 cm/s interlobar 39+_12,7 cm/s e arqueada 30,8+_14,4 cm/s. Para a variável VDF no G1 artéria renal 19,5+_5,1 cm/s interlobar 12,6+_3,6 cm/s e arqueada 11,9+_3,4 cm/s; no G2 artéria renal 16,5+_4,6 cm/s, interlobar 14,1+_4,9 cm/s e arqueada 11,3+_4,6 cm/s; e no G3 artéria renal 15,6+_2,6 cm/s, interlobar 11,7+_2,5 cm/s e arqueada 9,8+_3,1 cm/s. A aceleração foi do G1 na... (Resumo completo, clicar acesso eletrônico abaixo) / Abstract: The B-mode ultrasonography is a disgnostic procedure performed to assess renal function but with Duplex Doppler information is obtained that the role of intrarenalblood flow, and Doppler resistivity index, additional data important for the diagnosis of kidney disease. The potential use is related to the fact that most of the acute changes does not promote detectable changes to the B mode, but that the combined evaluation of vascularization may indicate kidney disease. This study aimed to find normal values for Doppler, resistivity index and acceleration of renal arteries, interlobar and arcuate in young animals, adults and seniors of the same size. The values for G1 in the renal artery 0,68+_0,08, 0,66+_0,05 and interlobar arcuate 0,66+_0,05, G2 0,67+_0,03 renal artery, interlobar 0,62+_0,06 and arched 0,62+_0,06: G3 0,69+_0,04 renal artery, interlobar 0,69+_0,05 and arcuate 0,66+_0,06 VPS values for G1 in the renal artery 71,7+_20,5 cm/s, interlobar 35,5+_8,3cm/s and 36,4+_4,6cm/s arched; in G2 in the renal artery 45+_8,2 cm/s, interlobar 37,6+_11,3 cm/s nd arched 32,3+_8,8 cm/s, and G3 in the renal artery 51,216,1 cm/s, interlobar 12,7+_39 cm/s and arched 30,8+_14,4 cm/s. For the variable renal artery EDV in G1 19,5+_5,1 cm/s interlobar 12,6+_3,6 cm/s and 11,9+_3,4 arched cm/s; G2 renal artery 1,5+_4,6 cm/s, interlobar 14,1+_4,9 cm/s and arched 11,3+_4,6 cm/s; and G3 renal artery 15,6+_2,6 cm/s, 11,7+_ interlobar 2,5 cm/s and arched 9,8 +_ 3,1 cm/s. The accelerationj of G1 was 984 +_ 3121,7 cm/s² renal artery... (Complete abstract click electronic access below) / Mestre

Orientador: Frederico Andrade e Silva / Tese (doutorado) - Universidade Estadual de Campinas, Faculdade de Odontologia de Piracicaba / Made available in DSpace on 2018-08-05T18:21:52Z (GMT). No. of bitstreams: 1 Cabral_ClaudioWilsonLimaFerro_D.pdf: 1062619 bytes, checksum: 5780d88f7d6ff279b2da4205cbed4a5b (MD5) Previous issue date: 2005 / Resumo: A influência dos contatos oclusais na dinâmica das articulações temporomandibulares e tonicidade dos músculos mastigatórios tem sido constatada em várias pesquisas. A harmonia entre esses componentes do sistema mastigatório só será obtida, se os contatos que ocorrem na superfície oclusal dos dentes, quer sejam no término do fechamento ou durante as excursões da mandíbula, forem identificados de forma precisa. Atualmente, existem vários materiais e técnicas para atender esta necessidade. No entanto, ainda hoje, essa tarefa é complexa e demanda um razoável tempo. A presente pesquisa objetivou avaliar os contatos obtidos em máxima intercuspidação habitual em pacientes Classe I de Angle, sem sinais e sintomas de desordens temporomandibular, com auxílio de tiras de papel carbono para a marcação dos contatos oclusais e estas associadas ao sensor do sistema computadorizado T-Scan II. Foram selecionados 23 indivíduos com dentição natural, sem nenhuma perda dentária (exceção dos terceiros molares), com contatos oclusais entre os dentes molares. Os dados obtidos foram analisados visualmente e estatisticamente (testes de Wilcoxon e de Mcnemar). Os resultados da análise visual mostraram que os números de contatos oclusais registrados na boca, tanto com as tiras de papel carbono, como com o sensor a elas associado, foram iguais em todos os sujeitos. E que, a localização de cada ponto de contato registrado nas faces oclusais, por ambos os métodos, foi à mesma em cada indivíduo da amostra. Quando os números de contatos oclusais registrados na boca, tanto com tiras de papel carbono quanto com sensor associado às tiras de papel carbono, foram emparelhados no teste de Wilcoxon, foi constatado que não houve diferença entre as técnicas (p = 1). E quanto à localização dos contatos oclusais, tanto com tiras de papel carbono quanto com sensor associado às tiras de papel carbono, foram analisados pelo teste estatístico Mcnemar, foi observado que não houve diferença entre as técnicas (p = 1). A técnica que associa o sensor (T-Scan II) às tiras de papel carbono, permitiu registrar a localização, o número, a distribuição, a seqüência, o tempo e a intensidade relativa dos contatos oclusais de forma precisa / Abstract: The influence of occlusion contacts on the temporomandibular articulation dynamics and the tonus of mastication muscles have been stated in many researches. The harmony among these components of the mastication system will only be obtained, if the contacts that occur on the occlusion surface of the teeth, either during the end of closing or during mandible excursions, are identified in a precise method. Today there are many materials and techniques that were developed to attend this necessity. However, up to this date it is still a complex and time demanding job. The present research objectified to evaluate the occlusion contacts obtained at the end of mandibular closing, with the help of carbon paper straps and the association of a T-Scan computerized sensor system and carbon paper straps. Twenty-three individuals possessing Angle¿s Class I, complete natural dentition, with no prior dental losses (except for third molars) and presenting occlusive contacts between the posterior teeth of the dental arcs were selected. The occlusion contact registers were obtained with the mandible positioned in maximum intercuspation. The data obtained were visually and statistically analyzed using the Biostart 3.0 software (Wilcoxon and Mcnemar tests). The visual analysis results revealed that the number of occlusion contacts registered in the mouth, much as carbon paper straps as sensor associate et carbon paper straps, were equal in all subjects. Also, the location of each contact point registered on the occlusion surfaces, for both techniques, was the same for each individual of the sample. When the number of occlusion contacts registered in the mouth, much as carbon paper straps as sensor associate et carbon paper straps, were to pair it the Wicoxon test, was verified that there were no differences among techniques (p=1). When the locations of the occlusion contacts registered in the mouth, much as carbon paper straps as sensor associate et carbon paper straps, were analyzed by the Mcnemar test, no differences were also observed between techniques (p=1). The technique that associates a sensor (T-Scan II) to carbon paper straps permitted the registration of location, number, distribution, sequence, time and relative intensity of occlusion contacts in a precise method / Doutorado / Protese Dental / Doutor em Clínica Odontológica

A Desordem do Espectro da Neuropatia Auditiva (DENA) é uma patologia que vem sendo foco de pesquisas e relatos de caso devido sua complexidade. A compreensão da fisiopatologia da DENA ainda não é precisa, o que proporciona desafios na prática médica, principalmente em relação à conduta mais adequada a ser adotada nestes casos. Neste contexto, a compreensão da anatomia do nervo vestibulococlear por meio do estudo de imagens, contribui para o diagnóstico das deficiências auditivas. Entretanto, apesar dos avanços tecnológicos e científicos nesta área, ainda existem inúmeros questionamentos quanto à localização da alteração em casos de DENA. Diante disso, o objetivo deste estudo foi descrever a correlação do quadro clínico audiológico e exame por imagem em indivíduos com diagnóstico de Desordem do Espectro da Neuropatia Auditiva dissociado de doenças pré-existentes por meio de uma revisão sistemática. A revisão sistemática foi realizada nas bases de dados LILACS, PubMed, Scopus e Web of Science. Foram identificados 1.966 artigos com a estratégia de busca, sendo 50 selecionados para leitura na integra e 20 textos analisados para a discussão. A ressonância magnética (RM) é um exame extremamente útil para diagnósticos de alterações do nervo coclear, possibilitando diagnóstico diferencial e auxilia na topografia da lesão. A avaliação da imagem no plano sagital permite avaliar o diâmetro do nervo coclear (NC) e suas características. O diâmetro do NC está relacionado com doenças durante a gestação e perinatal, contudo, na prática clínica a avaliação do diâmetro dos nervos é subjetiva. Não há padronização universal de análise e de uso quotidiano de mensurar o nervo coclear em pacientes submetidos a RM, quando em investigação etiológica para perdas auditivas sensorioneural. / Auditory Neuropathy Spectrum Disorder (ANSD) is a pathology that has been the focus of research and case reports, owing to its complexity. The understanding of ANSD pathophysiology is not yet precise, thus, presenting challenges in medical practice, especially regarding the most appropriate conduct to be adopted in these cases. In this context, the understanding of the anatomy of the vestibulocochlear nerve through the study of images contributes to the diagnosis of auditory deficiencies. However, despite the technological and scientific advances in this area, many questions about the location of the alteration, in cases of ANSD, still remain. Thus, this study aimed at describing, through a systematic review, the correlation of the clinical condition and the imaging examination in individuals diagnosed with Auditory Neuropathy Spectrum Disorder, dissociated from pre-existing diseases. The systematic review was carried out in the LILACS, PubMed, Scopus and Web of Science databases, identifying 1966 articles with the search strategy, 50 being selected for integral reading and 20 texts analyzed for discussion. Magnetic resonance imaging (MRI) is an extremely useful exam for the diagnosis of cochlear nerve alterations, allowing a differential diagnosis and aiding in the topography of the lesion. The evaluation of the image in the sagittal plane allows the assessment of cochlear nerve (CN) diameter and its characteristics. CN diameter is related to diseases during gestation and perinatal period, however, in clinical practice the evaluation of the diameter of the nerves is subjective. There is no analysis universal standardization of daily use to measure the cochlear nerve in patients submitted to MRI, in terms of etiological investigation for sensorineural hearing loss.