MR imaging-guided prostate interventional imaging: Ready for a clinical use?

Cornud, F.; Bomers, Joyce G. R.; Fütterer, Jurgen J.; Ghai, Sangeet; Reijnen, Jeroen Sebastiaan; Tempany, Clare M.

doi:10.1016/j.diii.2018.08.002

Cited by 12 publications

(3 citation statements)

References 72 publications

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“…Compared to ultrasound-guidance, MRI-guidance is more accurate as well as it makes biopsy-needles or cryoprobes positioning easier ( 7 - 10 ). In addition, it allows a real-time monitoring of the iceball.…”

Section: Discussionmentioning

confidence: 99%

“Prostate management” under MRI-guidance: 7 years of improvements

Tricard¹,

Garnon²,

Cazzato³

et al. 2020

Transl Cancer Res TCR

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Background The aim of this retrospective study is to represent our experience in percutaneous MRI-guided prostate procedures (biopsy and cryotherapy), and to discuss the improvement achieved in standardization of these procedures leading to a gain in feasibility and reproducibility of the technique used by urologists while handling MRI-environment. Methods From 2009 to 2018, 62 patients required MRI-guided prostate procedures in our institute. Throughout 9 years of experience, we have achieved an improvement of the technique used to protect the rectum and the urethra which increased accuracy and reproducibility. Procedures were performed by both urologists and radiologists under MRI guidance (Magnetom-Espree and Magnetom-Aera; Siemens, Erlangen, Germany) in a dedicated hybrid-room. Results Utilization of a patient stand and an acrylic needle-guided template created by Noras Company allowed standardization of the technique used and thus allowed an increase in accuracy. In order to protect the rectum, we inject patient’s own blood into the Denonvillier’s fascia which helps to dissect away the prostate from the rectum. In addition, the use of a thermocouple assistance probe placed in the urethral sphincter enabled urethral temperature monitoring during the entire procedure. The aim of temperature monitoring is to protect the urethra from possible thermal injuries. Conclusions Improvements achieved in our technique used in MRI guided prostate procedures may allow wide spread use of this technique in both radiological and urological fields and opens opportunities in the development of focal therapy of the prostate using MRI-guidance.

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Section: Discussionmentioning

confidence: 99%

“Prostate management” under MRI-guidance: 7 years of improvements

Tricard¹,

Garnon²,

Cazzato³

et al. 2020

Transl Cancer Res TCR

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“…Pepe et al reported a 16.2% and 39.7% respective false negative rates for targeted fusion prostate biopsy of PI-RADS 3 or greater and 4 or greater lesions 28 . The mpMRI as well as MRI/TRUS fusion is now widely recognized as one of the most efficient and cost effective methods to detect significant prostate cancer 8,26 . Recent studies showed the fusion biopsy detected 30% more high-risk cancers and 17% fewer low-risk cancers 23 .…”

Section: Discussionmentioning

confidence: 99%

Template for MR Visualization and Needle Targeting

Bakhutashvili

et al. 2018

Ann Biomed Eng

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To improve the targeting accuracy and reduce procedure time in MRI-guided procedures, a 3Dprinted flexible template was developed. The template was printed using flexible photopolymer resin FLFLGR02 in Form 2 printer® (Formlabs Inc, Somerville, MA). The flexible material gives the template a unique advantage by allowing it to make close contact with human skin and provide accurate insertion with the help of the newly developed OncoNav software. At the back of the template, there is a grid comprised of circular containers filled with contrast agent. At the front of the template, the guide holes between the containers provide space and angular flexibility for needle insertion. MRI scans are initially used to identify tumor position as well as the template location. The OncoNav software then pre-selects a best guide hole for targeting a specific lesion and suggests insertion depth for the physician A phantom study of 13 insertions in a CT scanner was carried out for assessing needle placement accuracy. The mean total distance (TD) error between planned and actual insertion is 2.7 mm, the maximum error was 4.78 mm and standard deviation was 1.1 mm. The accuracy of the OncoNav-assisted and template-guided needle targeting is comparable to the robot-assisted procedure. The proposed template is a lowcost, quickly-deployable and disposable medical device. The presented technology will be further evaluated in prostate cancer patients to quantify its accuracy in needle biopsy.

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“…The most relevant clinical applications of this approach concern tissue ablation, mostly in the context of tumor treatment. Brief overviews of this group of applications, directed to clinicians, have been published in the past decade, hinting at brain, breast, prostate, and liver tumors as the primary targets (Colen et al, 2017;Cornud et al, 2018;Siedek et al, 2019aSiedek et al, , 2019b. It has also been pointed out that thermal ablation of nonneoplastic central nervous system tissue is a valid option, e.g., for patients suffering from chronic neuropathic pain (thalamotomy).…”

Section: Destroying Tissue By Heating With Ultrasound: Mrt Applications In Tissue Ablationmentioning

confidence: 99%

Contactless Thermometry by MRI and MRS: Advanced Methods for Thermotherapy and Biomaterials

Lutz¹,

Bernard²

2020

iScience

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Control of temperature variation is of primordial importance in particular areas of biomedicine. In this context, medical treatments such as hyperthermia and cryotherapy, but also the development and use of hydrogel-based biomaterials are of particular concern. To enable accurate temperature measurement without perturbing or even destroying the biological tissue or material to be monitored, contactless thermometry methods are preferred. Among these, the most suitable are based on magnetic resonance imaging and spectroscopy (MRI, MRS). Here, we address the latest developments in this field as well as their current and anticipated practical applications. We highlight recent progress aimed at rendering MR thermometry faster and more reproducible, versatile and sophisticated, and provide our perspective on how these new techniques broaden the range of applications in medical treatments and biomaterial development by enabling insight into finer details of thermal behavior. Thus, these methods facilitate optimization of clinical and industrial heating and cooling protocols.

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MR imaging-guided prostate interventional imaging: Ready for a clinical use?

Cited by 12 publications

References 72 publications

“Prostate management” under MRI-guidance: 7 years of improvements

“Prostate management” under MRI-guidance: 7 years of improvements

Template for MR Visualization and Needle Targeting

Contactless Thermometry by MRI and MRS: Advanced Methods for Thermotherapy and Biomaterials

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