Prediction of prone-to-supine tumor displacement in the breast using patient position change: investigation with prone MRI and supine CT

Satake, Hiroko; Ishigaki, Satoko; Kitano, Mariko; Naganawa, Shinji

doi:10.1007/s12282-014-0545-z

Cited by 23 publications

(13 citation statements)

References 31 publications

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“…Although the examination was performed on the same patient in both the prone and supine positions, we did not include an estimate of the spatial displacement of the lesions in our objectives. Indeed, although it might seem easy to estimate the displacement of the breast lesions by changing from the prone to the supine position, on the contrary, the models proposed and published to date [ 31 , 32 , 33 ] have not considered the same examination technique in the transition to the supine position, or have made only one assessment of the displacement. We believe that the results would have been statistically more consistent if the measurements had been repeated several times so as to assess the error in the estimate of the lesion position.…”

Section: Discussionmentioning

confidence: 99%

Feasibility, Image Quality and Clinical Evaluation of Contrast-Enhanced Breast MRI Performed in a Supine Position Compared to the Standard Prone Position

Fausto

Fanizzi

Volterrani

et al. 2020

Cancers

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Background: To assess the feasibility, image quality and diagnostic value of contrast-enhanced breast magnetic resonance imaging (MRI) performed in a supine compared to a prone position. Methods: One hundred and fifty-one patients who had undergone a breast MRI in both the standard prone and supine position were evaluated retrospectively. Two 1.5 T MR scanners were used with the same image resolution, sequences and contrast medium in all examinations. The image quality and the number and dimensions of lesions were assessed by two expert radiologists in an independent and randomized fashion. Two different classification systems were used. Histopathology was the standard of reference. Results: Two hundred and forty MRIs from 120 patients were compared. The analysis revealed 134 MRIs with monofocal (U), 68 with multifocal (M) and 38 with multicentric (C) lesions. There was no difference between the image quality and number of lesions in the prone and supine examinations. A significant difference in the lesion extension was observed between the prone and supine position. No significant differences emerged in the classification of the lesions detected in the prone compared to the supine position. Conclusions: It is possible to perform breast MRI in a supine position with the same image quality, resolution and diagnostic value as in a prone position. In the prone position, the lesion dimensions are overestimated with a higher wash-in peak than in the supine position.

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Section: Discussionmentioning

confidence: 99%

Feasibility, Image Quality and Clinical Evaluation of Contrast-Enhanced Breast MRI Performed in a Supine Position Compared to the Standard Prone Position

Fausto

Fanizzi

Volterrani

et al. 2020

Cancers

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“…Telegrafo et al 4 showed that a key issue for clinical use of pre-operative breast MRI is how to transfer the three-dimensional (3D) information obtained from the patient in prone position to the operating room, since the surgical treatment is performed in the supine position 4,10 . If the location of MRI-detected tumors in the supine position could be predicted, those predicted positions could be used as a surgical planning guide for the surgeon 11,12 , which could then promote a decrease in the re-excision rate of BCS.…”

mentioning

confidence: 99%

“…To address this shortcoming, the distance of the tumors from the chest wall should be measured and compared to those at the nipple origin. The study by Satake et al 11 assessed the prediction of prone-to-supine tumor movement in the breast considering movement direction. However, only movement in the coronal plane was analyzed, which cannot show the movement of the tumor in three-dimensional (3D) coordinates.…”

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confidence: 99%

Breast tumor movements analysis using MRI scans in prone and supine positions

Wang

Lee

Hong

et al. 2020

Sci Rep

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We quantitatively evaluated breast tumor movement and volume changes between magnetic resonance imaging (MRI) scans in prone and supine positions. Twenty-seven breast tumor patients who received neoadjuvant systemic therapy (NST) for breast-conserving surgery were studied. Before and after NST, MRI scans in prone and supine positions were performed immediately. Tumor segmentation, volume, and position of tumors were evaluated in both positions. Average tumor volumes in prone and supine positions did not significantly differ (p = 0.877). Tumor movement from prone to supine positions from the origin of the bottom center of the sternum was strongly correlated with the distance from the tumor center to the chest wall (r = 0.669; p < 0.05). Tumor changes from prone to supine positions measured from the origin of the nipple depended on the location of the tumor in the breast. the proneto-supine movement of all tumors from the origin of the bottom center of the sternum tended to move outward from the sagittal centerline of the body on the coronal plane, to the inside of the body on the sagittal plane, and outward and downward close to the body on the axial plane, which might help in planning operations using prone MRi in supine-position breast cancer surgery.

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“…Actually, the shape of the breast is quite different between the prone position required during MRI scans and in a supine position on the operating table. Therefore, the location and spread of breast cancers must change from the time of MRI scans to the OR [6,7]. It requires labor and experience for breast surgeons to reconstruct the spread of breast cancer and to determine the optimal surgical line from MRI.…”

Section: Introductionmentioning

confidence: 99%

Development of MRI Projection Mapping System for Breast-Conserving Surgery in the Operating Room: Preliminary Clinical Results in Invasive Breast Cancer

Amano

Kitabatake

Nakata

et al. 2020

BioMed Research International

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Aim. To evaluate the feasibility of a newly developed prototype MRI projection mapping (PM) system for localization of invasive breast cancer before breast-conserving surgery. Methods. This prospective study enrolled 10 women with invasive breast cancer. MRI was performed in both prone and supine positions. The tumor location was drawn on the breast skin using palpation and sonography while referring to the prone MRI (i.e., a conventional method). A maximum intensity projection image generated from the supine MRI was projected using our PM system, and the tumor location was drawn. The PM system consisted of a projector and a camera and was used to measure the shape of the breast surface using the structured light method. Breast-conserving surgery was performed based on the conventional method. We compared the tumor size and location between the PM and conventional methods or pathology. Results. There were no significant differences in the maximum diameters of invasive cancers between the PM system and the conventional method or pathology. The maximum discrepancy in tumor location between the PM and conventional method was 3–8 mm. Conclusions. This PM system may support breast-conserving surgery by showing the tumor size and location on the breast surface.

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Prediction of prone-to-supine tumor displacement in the breast using patient position change: investigation with prone MRI and supine CT

Abstract: The present study showed that prone-to-supine tumor displacement in the breast differs depending on tumor location. The inner-lower quadrant of the breast may be the most predictable area for prone-to-supine tumor displacement.

Cited by 23 publications

References 31 publications

Feasibility, Image Quality and Clinical Evaluation of Contrast-Enhanced Breast MRI Performed in a Supine Position Compared to the Standard Prone Position

Feasibility, Image Quality and Clinical Evaluation of Contrast-Enhanced Breast MRI Performed in a Supine Position Compared to the Standard Prone Position

Breast tumor movements analysis using MRI scans in prone and supine positions

Development of MRI Projection Mapping System for Breast-Conserving Surgery in the Operating Room: Preliminary Clinical Results in Invasive Breast Cancer

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