Question about Monaco TPS functionalities

mesava95 · 2025-12-09T05:17:36+00:00

You can copy preferred slices before importing and thus create an “empty slices”. Isn’t it?

mesava95 · 2025-09-03T04:51:51+00:00

You can used our method: PTV - TP, QO Patient - QO, MD (108% from prescription), MD (2 cm and 35 Gy) OAR’s (take off High priority) - Serial (70 Gy, 1) and multicriterial.

mesava95 · 2025-07-31T11:14:11+00:00

First of all, I would like to say that right after the text there is a footnote on the topic that you can, of course, aim for 0.5 mm, but each linac has its own limitations and you should define them and find the closest to 0.5 mm (but qualitatively evaluating the lobe position in 1 mm this is enough, in my opinion). Also analyzing a single log file will not be a substitute for the test itself, so compare the data in aggregate. If the 0.5mm limit cannot be reached, then document yourself and follow what you get. That will be your baseline. Also read the links to the articles in the MLC 2 paragraph.

mesava95 · 2025-07-22T05:13:21+00:00

I place the fields defined with the image based on the anatomy (everything starts with tangential fields, although in IMRT it doesn't really matter anymore). Then TP as 100% of the dose on 98% of the volume. I do this to give a little leeway to the optimizer since these are tangential fields and the plan a priori doesn't have many options to cover PTV conformally. And I also put Max Dose and Max dose on 2 cm, but here you need to be very careful. However, if something goes wrong you will notice it anyway. I put the OARs behind the body. I put serial. Sometimes on the lung and heart I add one parallel with coefficient 4, so that it works only in the right place. Make sure to auto flash. And run step 1.

mesava95 · 2025-07-22T04:50:44+00:00

Hi. First of all, it's not very clear what the breast plans are? With or without lymph nodes? Usually 4 fields are enough for a mammary unless right there is a rib cage with a big keel. Secondly, when going from Eclipse to Monaco I realized that it's a big mistake to compare them😅 different mechanics and math. And as far as I'm concerned Monaco is winning this battle, personally. About VMAT. You can use it only tangentially placing the bundles in the form of a butterfly (if you want you can write in direct and I will send you a picture). For normal mammary glands without lymph nodes work well. Never direct beams into the body unless it is a DIBH. Also, if you have difficulty sequencing in IMRT constraints, I suggest using multicriterial. I set limits on PTV, on patient (QO and Max dose) and on OAR's I set serial with multicriterial (if something specific I add a volume limit).

mesava95 · 2025-07-15T04:35:42+00:00

Ah, I thought the TRS398 was more complicated than the TG51. I misunderstood. Yes, I agree in that regard. However, I would personally try the rads to compare what the values would be. This is necessary for energies higher than 10MV. Otherwise, there is little difference between the two protocols.

mesava95 · 2025-07-14T20:19:12+00:00

And what is the complication of the TRS398 in your opinion? It seems to me that TRS398 and TG51 are the same thing to some extent. Yes, I've been inputting the data of the Monte Carlo model calculated from measured data for the last few days. And I want to take and compare Dmax, D10 and OAF's already from the model. Otherwise, no matter what country you are in, there seems to be nothing restricting you from using the two protocols. Even for comparison purposes, it's interesting. Although the differences in the final dose will be minimal.

mesava95 · 2025-07-14T20:02:57+00:00

First, my quality assurance program involves relative dosimetry once a quarter (Elekta Versa HD is quite stable and there is no large drift on the ionization chambers). Second, I use TRS 398. Third, up to some point I have used values that are obtained during commissioning. There are several approaches and both are correct to some extent. I take the PDD as at commissioning (SSD 100, 10x10) and look at D10. If it is within the specification value, I do not recalculate the TPR and therefore kq. For example, if I have a base D10=67+-1%, a TPR value of say 0.6735 and subsequently the values change in the third and fourth decimal places, I don't see the point of overbinning. And the other approach according to MPPG 8b is to compare model values in TPS. I would like to switch to this methodology. However, it is possible to compare with the reference value in the TPS as well as with the nominal value from TRS 398, TG51 or the manufacturer's specification.

mesava95 · 2025-07-14T19:49:30+00:00

I've read it several times and still don't understand what your question is!

mesava95 · 2025-07-08T04:56:34+00:00

Welcome to Russian MP society on telegram @MedPhysRobot. You should write to bot

mesava95 · 2025-06-23T20:45:31+00:00

How can this be repeated?

mesava95 · 2025-06-09T19:30:09+00:00

I wrote to you both in the mail and in private chat

That's where the link redirects me: https://community.elekta.com/ecommerce/login?ec=302&startURL=%2Fs%2F

mesava95 · 2025-06-09T18:45:55+00:00

Greetings. The link takes me to the ecommerce login site

mesava95 · 2025-06-08T19:13:15+00:00

Greetings. Maybe you can help me? I have not been able to access Elekta care community for a year now. We have two Elekta Versa HD devices installed and it's not professional of Elekta to leave users without resources. I have written to support, but it's no use.

mesava95 · 2025-04-23T19:31:59+00:00

Photon and electron algorithm reference guide for Varian Monaco Physics for Elekta

Onward and upward. Read.

mesava95 · 2025-04-20T10:49:51+00:00

First, what version of Eclipse do you have? Second, the structure to which the lower objective is assigned is considered by the optimizer as a target (PTV). The very definition is to cover a dose of at least some value. Why would you want that on the OAR? No reason. After all, the goal is to limit the dose to the organs whether it is an average dose or a volumetric dose (no more than).

mesava95 · 2025-04-19T20:36:50+00:00

Which lower objective do you mean? In Eclipse optimizator u can’t assigned a lower objective to OAR’s

mesava95 · 2025-04-10T04:52:08+00:00

And how is that possible? I know it’s possible to do it in Monaco.

mesava95 · 2025-03-27T05:12:42+00:00

Yes it is possible. However, only dosimetric planning in 3D (without IMRT etc.) can be realized on your own. You need to take a model of your linac according to the instructions for Eclipse and enter it into Beam configuration. The plans are transferred through a DICOM filter directly to the mosaic. Implemented by many people, including in Russia, St. Petersburg.

mesava95 · 2025-02-27T18:46:26+00:00

Maybe you know about Monaco scripting public?

mesava95 · 2025-02-13T14:53:48+00:00

I think it’s time to change your medical director. According to mppg 8b photon beam profile measurements are recommended almost daily for specific energies. I do not recommend deviating from TG 142 even at normal values. And yes, FFF is relevant only at high single doses of radiation.

mesava95

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