Robust End-to-End Focal Liver Lesion Detection Using Unregistered Multiphase Computed Tomography Images

In the clinical practice of a general practitioner, there are many difficulties in the diagnosis of certain nosological forms, even in spite of various diagnostic studies. This is often due to the fact that in most cases, the used methods, especially ultrasound, as well as the results of many biochemical studies, make it possible to suspect pathology or reveal its indirect signs. Accurate diagnostic methods such as laparoscopy, biopsy, targeted biopsy, computed tomography and colonoscopy are rarely used. The clinical case presented below is one of the confirmations of the above [2; 3].

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Performance analysis of pre-processing filters using computed tomography images for liver lesion diagnosis

International Journal of Biomedical Engineering and Technology ◽

10.1504/ijbet.2021.119505 ◽

2021 ◽

Vol 37 (2) ◽

pp. 201

Author(s):

N. Shanila ◽

R.S. Vinod Kumar ◽

R. Ramya Ravi

Keyword(s):

Computed Tomography ◽

Performance Analysis ◽

Liver Lesion ◽

Computed Tomography Images

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Preoperative assessment of focal liver lesions: multidetector computed tomography challenges magnetic resonance imaging

Acta Radiologica ◽

10.1080/02841850510016108 ◽

2005 ◽

Vol 46 (1) ◽

pp. 9-15 ◽

Cited By ~ 23

Author(s):

K. Numminen ◽

H. Isoniemi ◽

J. Halavaara ◽

P. Tervahartiala ◽

H. Mäkisalo ◽

...

Keyword(s):

Computed Tomography ◽

Magnetic Resonance ◽

Multidetector Computed Tomography ◽

Intraoperative Ultrasound ◽

Preoperative Assessment ◽

Liver Lesion ◽

Lesion Detection ◽

Extrahepatic Disease ◽

Focal Liver Lesions ◽

Liver Lesions

Purpose: To investigate prospectively multidetector computed tomography (CT) (MDCT) and magnetic resonance (MR) imaging (MRI) in the preoperative assessment of focal liver lesions. Material and Methods: Multiphasic MDCT and conventional gadolinium‐enhanced MRI were performed on 31 consecutive patients prior to hepatic surgery. All images were blindly analyzed as consensus reading. Lesion counts and their relation to vascular structures and possible extrahepatic disease were determined. The data from the MDCT and MRI were compared with the results obtained by intraoperative ultrasound (IOUS) and palpation. Histopathologic verification was available. Results: At surgery, IOUS and palpation revealed 45 solid liver lesions. From these, preoperative MDCT detected 43 (96%) and MRI 35 (78%) deposits. MDCT performed statistically better than MRI in lesion detection ( P = 0.008). Assessment of lesion vascular proximity was correctly determined by MDCT in 98% of patients and by MRI in 87%. Statistical difference was found ( P = 0.002). IOUS and palpation changed the preoperative surgical plan as a result of extrahepatic disease in 8/31 (26%) cases. In MDCT as well in MRI extrahepatic involvement was suspected in two cases. Conclusion: MDCT was superior to MRI and nearly equal to IOUS in liver lesion detection and in the determination of lesion vascular proximity. However, both techniques fail to reliably detect extrahepatic disease.

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