Radiographic optimization of the lateral position of the knee joint aided by CT images and the maximum intensity projection technique

Abstract Background Standard lateral knee-joint X-ray images are crucial for the accurate diagnosis and treatment of many knee-joint-related conditions. However, it is difficult to obtain standard lateral knee-joint X-ray images in the current knee-joint lateral radiography position. Purpose To optimize the lateral position of knee joint for radiography aided by computed tomography (CT) images and the maximum intensity projection technique. Materials and methods One hundred cases of anteroposterior and lateral radiographs of knee joints were included. Of these, 50 cases were for lateral radiography in conventional position, and the other 50 cases were for lateral radiography in optimized position. The optimized position was acquired by a retrospective analysis of one hundred cases of knee-joint CT images. The quality of the X-ray images in optimized group was compared with those in conventional group. The data were statistically analyzed using the Mann–Whitney U test. Results There were differences in the optimized position between males and females. The posterior condyles of the femoral epiphysis in optimized group were in perfect superimposition for most patients. However, the ones in conventional group were not. The average quality score of the lateral knee-joint X-ray images in optimized position was 3.76 ± 0.98, which is much higher than the 1.84 ± 1.15 score in conventional position. Moreover, the difference in the average quality score was statistically significant (P < 0.05). Conclusion Optimization of the lateral position of knee joint for radiography is possible with the aid of CT images and the maximum intensity projection technique.

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Radiographic Optimization of The Lateral Position of The Knee Joint Aided by CT Images and The Maximum Intensity Projection Technique

10.21203/rs.3.rs-744837/v1 ◽

2021 ◽

Author(s):

Shiming Wang ◽

Zhibo Xiao ◽

Yunfeng Lu ◽

Zhiwei Zhang ◽

Fajin Lv

Keyword(s):

Knee Joint ◽

Maximum Intensity Projection ◽

Lateral Position ◽

Ct Images ◽

Quality Score ◽

Maximum Intensity ◽

Conventional Group ◽

Projection Technique ◽

Average Quality ◽

X Ray

Abstract Background: Standard lateral knee-joint X-ray images are crucial for the accurate diagnosis and treatment of many knee joint-related conditions. However, it is difficult to obtain standard lateral knee-joint X-ray images in the current knee-joint lateral radiography position.Purpose: To optimize the lateral position of knee-joint for radiography aided by computed tomography (CT) images and the maximum intensity projection technique. Materials and Methods: One hundred cases of anteroposterior and lateral radiographs of knee-joints were included. Of these, 50 cases were for lateral radiography in conventional position, and the other 50 cases were for lateral radiography in optimized position. The optimized position was acquired by a retrospective analysis of one hundred cases of knee-joint CT images. The quality of the X-ray images in optimized group was compared with those in conventional group. The data were statistically analyzed using the Mann-Whitney U test. Results: There were differences in the optimized position between males and females. The posterior condyles of the femoral epiphysis in optimized group were in perfect superimposition for most patients. However, the ones in conventional group were not. The average quality score of the lateral knee–joint X-ray images in optimized position was 3.76 ± 0.98, which is much higher than the 1.84 ± 1.15 score in conventional position. Moreover, the difference in the average quality score was statistically significant (P < 0.05). Conclusion: Optimization of the lateral position of knee-joint for radiography is possible with the aid of CT images and the maximum intensity projection technique.

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Diffuse Telangiectatic Type of Pulmonary Arteriovenous Malformation Diagnosed with CT Scan using Slab Maximum Intensity Projection Technique: A Case Report

Journal of the Korean Radiological Society ◽

10.3348/jkrs.2002.47.4.357 ◽

2002 ◽

Vol 47 (4) ◽

pp. 357

Author(s):

Byeong Seong Kang ◽

Joon Beom Seo ◽

In Sun Lee ◽

Kyung Hyun Do ◽

Jin Seong Lee ◽

...

Keyword(s):

Case Report ◽

Arteriovenous Malformation ◽

Ct Scan ◽

Maximum Intensity Projection ◽

Maximum Intensity ◽

Pulmonary Arteriovenous Malformation ◽

Projection Technique

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VISUALIZATION OF VASCULAR SYSTEM USING INVERSION RECOVERY SNAPSHOT FLASH (Turbo-FLASH) SEQUENCES IN COMBINATION WITH MAXIMUM INTENSITY PROJECTION TECHNIQUE

Japanese Journal of Radiological Technology ◽

10.6009/jjrt.kj00003500340 ◽

1992 ◽

Vol 48 (11) ◽

pp. 1971-1975

Author(s):

NOBORU FUKUSHIMA ◽

KOUJI IKEDA ◽

YASUHIRO KOBAYASHI ◽

MUTSUMI IKEDA ◽

TETSUO SHIMONO

Keyword(s):

Vascular System ◽

Maximum Intensity Projection ◽

Maximum Intensity ◽

Inversion Recovery ◽

Projection Technique ◽

Snapshot Flash

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Combined application of single-energy metal artifact reduction and reconstruction techniques in patients with Cochlear implants

Journal of Otolaryngology - Head and Neck Surgery ◽

10.1186/s40463-020-00462-1 ◽

2020 ◽

Vol 49 (1) ◽

Author(s):

Fanqin Wei ◽

Jiahui Li ◽

Chunxiang Zhou ◽

Yun Li ◽

Xianren Wang ◽

...

Keyword(s):

Signal To Noise Ratio ◽

Maximum Intensity Projection ◽

Quality Score ◽

Maximum Intensity ◽

Artifact Reduction ◽

Electrode Position ◽

Metal Artifact Reduction ◽

Signal To Noise ◽

Metal Artifacts ◽

Subjective Image Quality

Abstract Background The purpose of this study was to develop an effective method of reducing metal artifacts in cochlear implant (CI) electrodes. Methods The temporal bones of 30 patients (34 ears) after CI were examined with 320-detector row computed tomography, which was evaluated by two senior radiologists using a double-blind method. Noise, artifact index, signal-to-noise ratio, and the subjective image quality score were compared before versus after using single-energy metal artifact reduction (SEMAR). The electrode position, single electrode visibility, and electrode count were evaluated using SEMAR combined with either multi-planar reconstruction (MPR) or maximum intensity projection. Results The two radiologists’ measurements had good consistency. SEMAR significantly reduced the image noise and artifacts index and significantly improved the signal-to-noise ratio and subjective image quality score (P < 0.01). The combination of SEMAR with MPR was conducive to accurate assessment of electrode position and single-electrode visibility. The combination of SEMAR with MIP facilitated accurate and intuitive matching of the assessed electrode count with the number of electrodes implanted during the operation (P = 0.062). Conclusion SEMAR significantly reduces metal artifacts generated by CI electrodes and improves the quality of computed tomography images. The combination of SEMAR with MPR and maximum intensity projection is beneficial for evaluating the position and number of CI electrodes.

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