Usefulness of breath-hold compressed sensing accelerated three-dimensional magnetic resonance cholangiopancreatography (MRCP) added to respiratory-gating conventional MRCP

Tokoro, Hirokazu; Yamada, Akira; Suzuki, Takeshi; Kito, Yoshihiro; Adachi, Yasuo; Hayashihara, Hayato; Nickel, Dominik; Maruyama, Katsuya; Fujinaga, Yasunari

doi:10.1016/j.ejrad.2019.108765

Cited by 20 publications

(10 citation statements)

References 14 publications

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“…It has to be noted that in agreement with our results, other studies as well found better results with the BH CS sequences at 3 T, compared with NT CS sequences [22,23]. Tokoro et al found that the BH CS-MRCP sequence brings added value to standard NT MRCP, because it compensates the image deterioration of NT MRCP [24]. In detail, they found 43/ 113 cases with clinically inadequate image quality with the NT MRCP.…”

Section: Discussionsupporting

confidence: 91%

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Magnetic resonance cholangiopancreatography with compressed sensing at 1.5 T: clinical application for the evaluation of branch duct IPMN of the pancreas

et al. 2020

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Objectives To evaluate magnetic resonance cholangiopancreatography (MRCP) with compressed sensing (CS) for the assessment of branch duct intraductal papillary mucinous neoplasm (BD-IPMN) of the pancreas. For this purpose, conventional navigator-triggered (NT) sampling perfection with application-optimized contrast using different flip angle evolutions (SPACE) MRCP was compared with various CS-SPACE-MRCP sequences in a clinical setting. Methods A total of 41 patients (14 male, 27 female, mean age 68 years) underwent 1.5-T MRCP for the evaluation of BD-IPMN. The MRCP protocol consisted of the following sequences: conventional NT-SPACE-MRCP, CS-SPACE-MRCP with long (BHL, 17 s) and short single breath-hold (BHS, 8 s), and NT-CS-SPACE-MRCP. Two board-certified radiologists evaluated image quality, duct sharpness, duct visualization, lesion conspicuity, confidence, and communication with the main pancreatic duct in consensus using a 5-point scale (1–5), with higher scores indicating better quality/delineation/confidence. Maximum intensity projection reconstructions and originally acquired data were used for evaluation. Wilcoxon signed-rank test was used to compare the intra-individual difference between sequences. Results BHS-CS-SPACE-MRCP had the highest scores for image quality (3.85 ± 0.79), duct sharpness (3.81 ± 1.05), and duct visualization (3.81 ± 1.01). There was a significant difference compared with NT-CS-SPACE-MRCP (p < 0.05) but no significant difference to the standard NT-SPACE-MRCP (p > 0.05). Concerning diagnostic quality, BHS-CS-SPACE-MRCP had the highest scores in lesion conspicuity (3.95 ± 0.92), confidence (4.12 ± 1.08), and communication (3.8 ± 1.06), significantly higher compared with NT-SPACE-MRCP, BHL-SPACE-MRCP, and NT-CS-SPACE-MRCP (p = <0.05). Conclusions MRCP with CS 3D SPACE for the evaluation of BD-IPMN at 1.5 T provides the best results using a short breath-hold sequence. This approach is feasible and an excellent alternative to standard NT 3D MRCP sequences. Key Points • 1.5-T MRCP with compressed sensing for the evaluation of branch duct IPMN is a feasible method. • Short breath-hold sequences provide the best results for this purpose.

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Section: Discussionsupporting

confidence: 91%

“…Tokoro et al found that the BH CS-MRCP sequence brings added value to standard NT MRCP, because it compensates the image deterioration of NT MRCP [ 24 ]. In detail, they found 43/113 cases with clinically inadequate image quality with the NT MRCP.…”

Section: Discussionmentioning

confidence: 99%

Magnetic resonance cholangiopancreatography with compressed sensing at 1.5 T: clinical application for the evaluation of branch duct IPMN of the pancreas

et al. 2020

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“…Given the short acquisition time of this sequence, it would be of interest to determine the sensitivity of a second acquisition in the event of bad image quality on the first acquisition. Tokoro et al's study suggested that the addition of the CS-BH-MRCP to the conventional MRCP protocol at 3T added value to the MRCP examination, since the CS-BH-MRCP could compensate for the image deterioration of the RT-MRCP caused by motion artefacts, although the image quality of the CS-BH-MRCP was not better than the RT-MRCP [34].…”

Section: Discussionmentioning

confidence: 99%

Single-Breath-Hold MRI-SPACE Cholangiopancreatography with Compressed Sensing versus Conventional Respiratory-Triggered MRI-SPACE Cholangiopancreatography at 3Tesla: Comparison of Image Quality and Diagnostic Confidence

Chevallier¹,

Escande²,

Ambarki

et al. 2021

Diagnostics

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To compare two magnetic resonance cholangiopancreatography (MRCP) sequences at 3 Tesla (3T): the conventional 3D Respiratory-Triggered SPACE sequence (RT-MRCP) and a prototype 3D Compressed-Sensing Breath-Hold SPACE sequence (CS-BH-MRCP), in terms of qualitative and quantitative image quality and radiologist’s diagnostic confidence for detecting common bile duct (CBD) lithiasis, biliary anastomosis stenosis in liver-transplant recipients, and communication of pancreatic cyst with the main pancreatic duct (MPD). Sixty-eight patients with suspicion of choledocholithiasis or biliary anastomosis stenosis after liver transplant, or branch-duct intraductal papillary mucinous neoplasm of the pancreas (BD-IPMN), were included. The relative CBD to peri-biliary tissues (PBT) contrast ratio (CR) was assessed. Overall image quality, presence of artefacts, background noise suppression and the visualization of 12 separated segments of the pancreatic and bile ducts were evaluated by two observers working independently on a five-point scale. Diagnostic confidence was scored on a 1–3 scale. The CS-BH-MRCP presented significantly better CRs (p < 0.0001), image quality (p = 0.004), background noise suppression (p = 0.011), fewer artefacts (p = 0.004) and better visualization of pancreatic and bile ducts segments with the exception of the proximal CBD (p = 0.054), cystic duct confluence (p = 0.459), the four secondary intrahepatic bile ducts, and central part of the MPD (p = 0.885) for which no significant differences were found. Overall, diagnostic confidence was significantly better with the CS-BH-MRCP sequence for both readers (p = 0.038 and p = 0.038, respectively). This study shows that the CS-BH-MRCP sequence presents overall better image quality and bile and pancreatic ducts visualization compared to the conventional RT-MRCP sequence at 3T.

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“…The medical imaging, the magnetic resonance cholangio-pancreatography is defined that is a non-invasive, safe and effective cholangiopancreatography technique that uses the heavy T2-weighted technique to present high signals in the anatomical structure of the pancreatic bile duct containing bile and pancreatic fluid, and no contrast agent is used in the imaging process [11][12][13]. It is a non-invasive, safe and effective cholangiopancreatography technique [14]. In 2D-MRCP, its thick collection sequence through single level, without post-processing gain levels within the system volume of pancreatic MRCP projection images, often in a breath breathless cases at the end of the collection.…”

Section: Discussionmentioning

confidence: 99%

Evaluating the Clinical Application Value of Ferric Citrate Effervescent Granules (FAC) in Magnetic Resonance Cholangio-Pancreatography (MRCP) Inspection

Liang¹,

Cai²,

Wang³

2020

IJMI

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Usefulness of breath-hold compressed sensing accelerated three-dimensional magnetic resonance cholangiopancreatography (MRCP) added to respiratory-gating conventional MRCP

Cited by 20 publications

References 14 publications

Magnetic resonance cholangiopancreatography with compressed sensing at 1.5 T: clinical application for the evaluation of branch duct IPMN of the pancreas

Magnetic resonance cholangiopancreatography with compressed sensing at 1.5 T: clinical application for the evaluation of branch duct IPMN of the pancreas

Single-Breath-Hold MRI-SPACE Cholangiopancreatography with Compressed Sensing versus Conventional Respiratory-Triggered MRI-SPACE Cholangiopancreatography at 3Tesla: Comparison of Image Quality and Diagnostic Confidence

Evaluating the Clinical Application Value of Ferric Citrate Effervescent Granules (FAC) in Magnetic Resonance Cholangio-Pancreatography (MRCP) Inspection

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