MRI-Guided Prostate Biopsy - Fusion Prostate Biopsy

A standard prostate biopsy takes twelve samples blind. A fusion biopsy takes them where the MRI says the cancer is.

Your PSA has come back raised, perhaps twice, and someone has said the word biopsy. For decades that meant a probe in the rectum and twelve needles fired in a fixed pattern, hoping to hit a cancer nobody could see. Two studies changed the order of events. In PROMIS, an MRI scan found 93 percent of the cancers that mattered where the blind biopsy found 48 percent. In PRECISION, men who had an MRI first and needles aimed only at what it showed were diagnosed with significant cancer more often, 38 against 26 percent, with fewer harmless cancers picked up along the way, and 28 percent of them needed no biopsy at all. Fusion puts those two facts to work. Software lays the MRI over the live ultrasound so the needle goes to the target. This page explains how it is done, which route through the body is safer, what the scores on your MRI report mean, and how to arrange the test during a short stay in Istanbul.

MRI-Guided Prostate Biopsy (Fusion Prostate Biopsy) is a biopsy in which the needle is aimed at a spot chosen on an MRI scan taken beforehand. An MRI shows the prostate in fine detail and marks any area that looks suspicious. On the day, an ultrasound probe shows the prostate live, and software fuses the two pictures so that the suspicious area from the MRI appears on the ultrasound screen as a target. The urologist steers the needle to it.

A standard biopsy has no target. Twelve samples come from fixed positions. A cancer small enough or oddly placed enough to sit between them goes unfound, while a tiny cancer of no consequence that happens to lie under a needle gets found, named and sometimes treated.

Aim first. Then sample. Two to four cores come from each target, and a smaller set of systematic samples from the rest of the gland makes sure that nothing the MRI could not see is left unchecked.

Two studies, five years apart, moved the MRI from an optional extra to the first step, and their numbers are the ones every guideline now quotes.

PROMIS showed that the picture was better than the blind needle. PRECISION showed that acting on the picture changed the diagnosis.

Guidelines in Europe and North America now place an MRI before the first biopsy, and a biopsy without one is the exception that needs a reason.

One number in PROMIS deserves its own line. Specificity came to 41 percent, which means a suspicious area on the scan turns out to be harmless in more than half of men. Hence the biopsy. A worrying MRI report calls for a targeted biopsy, and the biopsy, far more reliably than the report, gives the answer.

Men whose MRI shows nothing suspicious and whose PSA density is low can, in most cases, avoid a biopsy and be followed with PSA tests. The review says so plainly when that applies to you.

Prostate MRI reports use a five-point scale called PI-RADS, and the number decides what happens next.

Two things make the score reliable. The scanner and the protocol, which for prostate work means a 1.5 or 3 Tesla machine running diffusion and contrast sequences, and the radiologist, who reports better with volume. An MRI from home serves for fusion when it meets both tests. When it does not, the scan is repeated here before the biopsy, a decision made from your images rather than from the report alone, and one that costs a day of the trip rather than a wasted biopsy.

The needle reaches the prostate by one of two routes, and the choice is about infection.

Through the rectum is the traditional way. The probe sits in the rectum and the needle passes through its wall, which carries gut bacteria into the gland and is the reason antibiotics are given and the reason sepsis still happens. Through the perineum, the skin between the scrotum and the anus, the needle never touches the bowel.

The numbers come from England, where 73,630 biopsies were compared in BJU International in 2020, and they run as follows. Readmission with sepsis 1.0 percent after the perineal route against 1.4 percent after the rectal route. Readmission with urinary retention 1.9 against 1.0 percent. Bleeding and death the same. One fewer readmission for sepsis in every 278 men, at the cost of three more readmissions for retention.

The perineal route is now recommended by the European Association of Urology as the default, and it reaches the front of the gland more easily, which is where the cancers missed by earlier biopsies hide. Discomfort counts against it. It used to need a general anesthetic, and local anesthetic techniques now let most men have it awake or lightly sedated. The rectal route keeps a place for men who cannot lie in the position the perineal approach needs.

Cognitive fusion

Looking at the MRI, the urologist keeps the target in mind and aims the ultrasound-guided needle at the matching spot. No software. It works well in experienced hands for large or obvious lesions, less well for small ones.

Software fusion

A platform loads the MRI, maps it onto the live ultrasound, tracks the probe, and shows the target on screen. The urologist steers the needle to it. The system records where each core was taken, which matters if the biopsy has to be repeated later, and this is what fusion biopsy usually means when a hospital uses the phrase.

In-bore biopsy

Here the biopsy happens inside the MRI scanner itself, with the needle guided by repeated scans. Nothing beats it for very small targets. Nothing costs more or takes longer either, so it stays reserved for the few men in whom software fusion has failed.

Software fusion is what this page describes, and what most hospitals mean by the term. Ask any hospital which platform it uses and how many fusion biopsies its urologists perform in a year, since the software is only as good as the hand on the probe.

Preparation stays light. Most of it concerns medicines.

Allow two hours at the hospital for a procedure that takes twenty to thirty minutes.

1. Position. On your back with your legs raised in supports for the perineal route, or on your side for the rectal route.
2. Fusion. The ultrasound probe goes into the rectum, and the urologist matches the live image to the MRI on the fusion screen. A few minutes, and the step that decides accuracy.
3. Anesthetic. Local anesthetic around the prostate and, for the perineal route, into the skin. Sedation for men who want it, which turns the day into an accompanied one with the usual 24 hours of no driving.
4. Cores. Each is taken with a spring-loaded needle that makes a loud click and a brief sting. Two to four per target, and a set of systematic cores across the gland, come to somewhere between twelve and twenty in all. They go into labeled pots so the pathologist knows which came from the target.
5. Home. You pass urine before leaving. Most men walk out within an hour, and a man who has traveled alone and had no sedation can go back to the hotel by taxi, with the number of the coordinator in his phone and the instruction to call about fever.

Blood runs through the first weeks, in the urine, in the semen, occasionally from the rectum, and almost all of it means nothing.

Pathology takes three to seven working days, and the report states, for each core, whether cancer was found, how much of the core it occupied, and its grade, with the targeted cores listed separately from the systematic ones so that the reader can see whether the MRI was right.

A negative result after a targeted biopsy of a PI-RADS 4 or 5 lesion reassures. A PSA test in a few months and a repeat MRI in a year follow it. A cancer that needs treatment leads to staging, a bone scan or PSMA PET-CT, and a discussion of surgery, radiation or, for the right man, watching.

A fusion biopsy is a short visit, and the length depends on whether the MRI comes with you or is done here.

Radiation, sedation, needles, none of them restricts flying. The reason to stay a day is the small chance of retention or fever in the first 24 hours, both far easier to deal with twenty minutes from the hospital than in an airport. Pathology follows you home by WhatsApp and e-mail.

No figure appears on this page. A fusion biopsy quote has fewer parts than most, and here they are.

Packages published by Turkish hospitals and medical travel agencies for prostate biopsy cover consultation, the procedure, pathology, an interpreter and transfers, and leave out the MRI unless it is named, flights, insurance and accommodation.

A quote you can compare names the route, the number of cores expected, whether the MRI is inside the figure, and whether sedation is. It follows the free review.

Language

Biruni Hospital gives every international patient one coordinator from the first message, reachable on the same WhatsApp number afterwards. The international patients team works in English, Arabic, French, Russian, Serbian, Romanian and Spanish and arranges interpreters for other languages, which matters at the consultation, where the route is chosen, and again when the result is explained.

Companion and paperwork

Sedation makes a companion a requirement. Without it, one is welcome and not needed. The office books accommodation close to the hospital, arranges airport transfers and the car to the hospital, and issues an appointment confirmation and invitation letter for a visa ten days or so before travel. The hospital kitchen prepares halal, vegetarian and diabetic meals, and a prayer room is on site. Many men ask whether the urologist will be male. Say what you prefer in the first message, and the department arranges it where the rota allows.

Once you get back home, the pathology report, the MRI report, the biopsy map showing where each core was taken, and a written recommendation go to your own urologist.

• After a negative biopsy, a PSA test at three to six months and a repeat MRI at twelve months
• On active surveillance, PSA every three to six months, an MRI at twelve to eighteen months, and a repeat fusion biopsy when the scan or the PSA changes
• After a diagnosis that needs treatment, the staging scans and the treatment discussion, here or at home, within a few weeks

Fever in the first week goes to a local emergency department the same day. Everything else waits for the coordinator on WhatsApp, including a scan you would like the urologist here to compare with the earlier one.