Low-dose rate (LDR) brachytherapy is a method of delivering radiation at a rate of less than 2.0 Gy/h by placing sealed radiation sources directly in or near the treatment area. In plain terms, it is an internal form of radiation therapy; “brachy” comes from the Greek word for “short distance,” reflecting that the radiation source is placed very close to or within the tumour itself.
What is LDR Brachytherapy?
LDR brachytherapy is a type of internal radiation treatment used to treat localised prostate cancer. During the procedure, tiny radioactive seeds are placed directly into the prostate gland, where they slowly release radiation over time. Since the radiation is focused directly on the cancer, it can destroy tumour cells more precisely while helping to protect nearby healthy tissues, such as the bladder and rectum.
This treatment is considered minimally invasive and is usually completed in a single procedure, allowing many patients to return to their normal routine more quickly compared to surgery or several weeks of external beam radiotherapy. LDR brachytherapy is also known for offering good long-term cancer control outcomes, while helping many men maintain better urinary continence and sexual function than some alternative treatments.
Unlike prostate removal surgery, which completely removes the prostate gland, brachytherapy treats the cancer from inside the body without major incisions. It may be recommended for men with localised or low-to-intermediate risk prostate cancer, depending on their overall health and cancer stage.
How does LDR Brachytherapy help treat prostate cancer?
Low-dose rate (LDR) brachytherapy, often called seed implantation or prostate brachytherapy, is a form of internal radiation treatment used for prostate cancer. The procedure involves placing tiny radioactive seeds directly into the prostate gland, allowing radiation to target the cancer more precisely while limiting exposure to nearby healthy tissues.
As the treatment is minimally invasive, it does not involve major surgery, and most patients only need a short hospital stay, often returning home the same day or within 24 hours. Recovery is generally quick, with many men resuming their normal daily activities within a few days.
LDR brachytherapy differs from external beam radiotherapy (EBRT), where radiation is delivered from outside the body using high-energy X-rays. In EBRT, the radiation must pass through surrounding tissues before reaching the prostate, which can sometimes affect nearby healthy areas. In contrast, brachytherapy delivers radiation from inside the prostate itself, helping concentrate treatment directly on the tumour site.
What is the procedure?
Before undergoing LDR brachytherapy, patients usually attend a consultation with an oncologist to prepare for treatment. Depending on the hospital, this planning appointment may take place a few days or weeks before the procedure, while some centres complete the planning on the same day as treatment.
At this stage, doctors may use imaging techniques like ultrasound or MRI scans. It helps in providing a more detailed view of the prostate gland. These images help the medical team identify the exact location of the tumour and calculate the most suitable radiation dose for treatment.
The procedure itself is carried out under either general anaesthesia or spinal anaesthesia. Small radioactive seeds, each roughly the size of a grain of rice, are carefully placed into the prostate through fine hollow needles. Ultrasound guidance is commonly used throughout the procedure to ensure accurate placement of the seeds. The needles are inserted through the perineum, which is the area between the scrotum and the anus, and removed once the seeds are positioned correctly.
LDR brachytherapy is typically completed within about an hour. After recovering from the anaesthetic, most patients can return home later the same day. A follow-up CT scan may be arranged within several weeks after treatment to review the placement of the seeds and assess the treatment plan further.
The implanted seeds remain inside the prostate and gradually release radiation over several months. This targeted approach helps destroy cancer cells while reducing exposure to surrounding healthy tissues, allowing many patients to continue with their normal daily activities with minimal disruption.
Who is suitable for this procedure?
LDR brachytherapy is often recommended for men with localised prostate cancer, meaning the cancer is contained within the prostate gland. It may be suitable for patients with low-risk or intermediate-risk prostate cancer, depending on factors such as:
- PSA (Prostate-Specific Antigen) levels
- Gleason score
- Size of the prostate gland
- Overall health and urinary function
- Extent of the cancer
In some cases, LDR brachytherapy may be combined with other treatments, including hormone therapy or external beam radiotherapy. A specialist will assess whether the treatment is appropriate based on each patient’s individual condition.
What are the benefits?
LDR brachytherapy offers several advantages for suitable patients, including:
- Minimally invasive treatment
The procedure does not involve major surgical incisions, which can reduce recovery time and hospital stay.
- Targeted radiation delivery
Radiation is delivered directly into the prostate, helping reduce exposure to nearby healthy organs and tissues.
- Shorter recovery period
Most patients return to normal daily activities within a few days following treatment.
- Reduced hospital stay
Many men are discharged on the same day as the procedure or after a short overnight stay.
- Effective long-term cancer control
LDR brachytherapy has demonstrated strong long-term outcomes in appropriately selected patients with localised prostate cancer.
- Lower risk of certain side effects
Compared with some other prostate cancer treatments, many patients experience lower rates of urinary incontinence and preservation of sexual function.
What are the possible side effects of LDR Brachytherapy
Although LDR brachytherapy is generally well tolerated, some side effects may occur during recovery. These can include:
- Increased urinary frequency
- Burning sensation during urination
- Difficulty passing urine
- Mild discomfort in the treatment area
- Blood in the urine or semen
- Temporary bowel irritation
These symptoms are usually temporary and often settle down as time goes on. However, patients should contact their healthcare team if symptoms become severe or persistent.
LDR Brachytherapy vs External Beam Radiotherapy (EBRT)
Both LDR brachytherapy and external beam radiotherapy are used to treat prostate cancer, but they deliver radiation differently.
In external beam radiotherapy, radiation is directed at the prostate from outside the body using high-energy X-rays. The radiation must pass through surrounding tissues before reaching the tumour.
In contrast, LDR brachytherapy places radioactive seeds directly inside the prostate. This allows radiation to target the tumour more precisely while limiting exposure to nearby healthy structures.
Another difference is treatment duration. External beam radiotherapy often requires multiple hospital visits over several weeks, while LDR brachytherapy is usually completed in a single procedure.
What is the recovery after the procedure?
Recovery is generally quick following LDR brachytherapy. Most patients can resume light activities within a day or two, although strenuous exercise may need to be avoided temporarily.
Patients usually attend regular follow-up appointments to monitor PSA levels and assess how the prostate cancer is responding to treatment.
Doctors may also provide guidance regarding temporary precautions related to the radioactive seeds, particularly around close contact with pregnant women or young children during the early recovery period.
Are you concerned about prostate health? Contact the best urologist in Manchester.
Conclusion
LDR brachytherapy is a minimally invasive treatment for localised prostate cancer that delivers targeted radiation directly into the prostate gland using tiny radioactive seeds. The treatment helps destroy cancer cells while limiting damage to nearby healthy tissues. With a short hospital stay, quicker recovery, and strong long-term treatment outcomes, it is considered an effective option for many prostate cancer patients.
FAQs
1. What is LDR brachytherapy?
LDR brachytherapy is an internal radiation treatment for prostate cancer that uses tiny radioactive seeds placed inside the prostate gland.
2. How long does the procedure take?
The procedure usually takes around one hour, and most patients return home the same day.
3. Is LDR brachytherapy painful?
The treatment is performed under anaesthesia, so patients do not feel pain during the procedure. Mild discomfort may occur during recovery.
4. How long does recovery take?
Most men return to normal daily activities within a few days after treatment.
5. Are the radioactive seeds removed later?
No, the seeds remain permanently inside the prostate, but the radiation gradually reduces over time.
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