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Tuesday, December 22, 2015

http://suppversity.blogspot.com/2014/03/losing-weight-doesnt-have-to-ruin-your.html

Friday, December 18, 2015

Running and cardiac health

The best health outcomes are actually found far below the exercise levels of even casual endurance athletes. A 15-year observational study of 52,000 adults found that the highest degree of survival and health was found from running less than 20 miles per week, in runs of 30 to 45 minutes over three or four days, at about an 8:30 to 10:00 pace. The benefits decrease at amounts greater than that.
Read more at http://running.competitor.com/2012/06/news/how-much-running-is-bad-for-your-heart_54331#6WoA5FeryQoI2rwt.99




Tuesday, October 20, 2015

Sauna benefits

http://fourhourworkweek.com/2014/04/10/saunas-hyperthermic-conditioning-2/

Monday, October 12, 2015

Rotator cuff exercises

http://www.muscleforlife.com/rotator-cuff-exercises/

Random vs blocked practice

http://www.bulletproofmusician.com/why-the-progress-in-the-practice-room-seems-to-disappear-overnight/

Practice guidelines, intermediate vs expert

http://www.bulletproofmusician.com/how-do-experts-get-even-better-5-differences-between-the-practice-of-expert-and-intermediate-athletes/

Tuesday, September 22, 2015

Cycling to improve running

Map my fitness

Katch McArdle

The Katch-McArdle Formula (Resting Daily Energy Expenditure):
  •  P = 370 + \left( {21.6 \cdot LBM} \right), where LBM is the lean body mass in kg.
According to this formula, if the woman in the example has a body fat percentage of 30%, her RDEE (the authors use the term of basal and resting metabolism interchangeably) would be 1263 kcal per day.

Wednesday, July 15, 2015

Tuesday, May 19, 2015

Investing info

Investing info
http://seekingalpha.com/article/3192756-half-million-dollar-income-project-survey-results?auth_param=c3ab3:1aln0qa:e614f76d649193256f2ee946cc804f10&uprof=45

Monday, May 18, 2015

Dynalog discussion from list server

Subject:Re: IMRT qa Debate?
From:"James P. Nunn" <James.Nunn@HCAHEALTHCARE.COM>
Reply-To:James.Nunn@HCAHEALTHCARE.COM
Date:Fri, 22 Nov 2013 10:21:38 -0600
Content-Type:text/plain
Parts/Attachments:
Parts/Attachmentstext/plain (48 lines)
Reply
John and all, 

 I am pleased to see this come up for debate on the medphys and I glad that folks are starting to take notice of dynalog files and their utility as a qa tool.  I would refer the interested parties to the medphys and red journal for a thorough literature review on the subject.  Most notably some of the earlier research done by Chester Ramsey in TN, also I believe Sasa Mutic at Wash U has done a lot of research in this area as well.  There have been a lot of papers written on using dynalog files for patient specific QA, their utility, and accuracy.  As far as the appropriateness of using log files for the sole method for IMRT QA, I think I would adopt a sort of TG-100 approach to this.  The physicist should test the newer method against what is currently used and base your QA program from your own established data.  In other words, this might be something each site needs to address, study, and then make a decision based on the former.
 Now, as for us here at Pulaski, we have been using fraction check for about 2 years now and we analyze every log file generated from our 2 Varian accelerators.  This runs automatically in the background and requires very little work on the part of physics (once you set it up or course).  Also, we have Mobius 3D installed and have been using it clinically for some time now.  As I understand, and I encourage Mobius to jump in if I mis-state something, the Mobius data is an average of many clinical machines.  These were not machines that were in the test vault in Palo alto, but rather actual commissioned machines in use by clinics.  So golden, maybe not so much, as the machine data was acquired using actual commissioned machines by actual clinical medical physicists.   We approach the Mobius data in the following fashion. I am looking for my clinical data to match very closely with the Mobius data to find obvious gross errors in my clinical commissioned data, but not necessarily exactly.  The utility of this approach is the fact that this is NOT my data.  Owing to the fact that most machines are very close from the factory, one should be able to compare against an average data set (again this is a second check not your primary calculation).  The good thing is, the only piece of my data that touches Mobius is my PDD10x, all other data is Mobius.  So, I have a comparison based on an entirely independent data set.  In contrast other 2nd check programs use the site clinical data for calculation and in doing so, have the capability of re-introducing any site errors into the second check system. In other words, if you have an output factor that is transposed in your pinnacle and that gets copied into another 2nd check program, it will calculate as correct.  Further, as we use pinnacle for our TPS, I feel that using the CCC in Mobius allows us to compare "apples to apples" or "CCC to CCC." 
 With respect to log files, as I understand the controller samples the leaf and carriage motors every 50 ms for clinac dynalog and ~5ms for true beam trajectory files. This sampling is compared to the planned data and spit out as a ASCII file for analysis. I think that is the quick overview, but the readers a referred to the dynalog file format explanation available on the myvarian.com website.  Now that the Mobius FX has come along, I now take the files that are processed by fraction check and automatically transfer them to the Mobius server where there are used to recalculate the dose delivered to the patient, 3D gamma, checks on jaw, gantry, and other parameters. (please see the lecture given by Sasa Mutic at the 2013 summer school, if its available regarding full feedback from your linac in QA).  This give us not only a second check on delivered doses, but checks that what pinnacle sent to mosaiq that then got sent to the 4DITC matches what was delivered on the machine.  So it's a little more than just dose. It forms a loop that constantly compares the original plan to the parameters that were set on the machine for treatment.  Not just for one fraction, but for all delivered fractions.
 As far as whether these log files can or should be used clinically...TBA. But I will remind the readers that there are issues with our current QA methods as well, see Nelms, et. al Medphys 38 (2), Feb 2011.  In summary of that paper, the errors that may be detected using current systems, may not actually be clinically relevant.  So some other methods need to be explored, as we are doing with dynalog files.  Personally, I want to find and correct errors that affect the quality of the treatments we are delivering to our patients, by whatever means possible. If this is a log file, so be it.
 Sorry for the long winded explanation, but this is a subject that is near and dear to my heart.  If you want to talk more about this, gimme a call.

Cheers

James P. Nunn, MS, CHP, DABR 
Senior Medical Physicist 
Radiation Safety Officer 
LewisGale Hospital Pulaski
LewisGale Regional Center at Pulaski
2400 Lee Highway 
Pulaski, Virginia 24301 
(540) 994-8545 Clinic 
(540) 994-8568 fax 
(540) 239-0224 Cell 

Wednesday, March 25, 2015

Tuesday, February 17, 2015

audio/video equipment for project

Video: Panasonic HMC152EN Pal (American NTSC Version of the camera is the HMC-150)
Audio: Rode NTG-3 Microphones Recorded in Stereo
Recorder: Zoom H4N

Monday, February 9, 2015

AAMD Webinar/RTOG 1005

Date:    Sat, 7 Feb 2015 10:48:18 -0500
From:    Scott Dube <scott.dube@GMAIL.COM>
Subject: Re: Eclipse Forward Planning

This AAMD Webinar may help:

http://www.screencast.com/users/AAMD/folders/NMDD%202014/media/f2be59cc-ca21-425d-9dee-243f49aa2474

And for objectives you can use RTOG 1005:

http://www.rtog.org/ClinicalTrials/ProtocolTable/StudyDetails.aspx?study=1005


On Fri, Feb 6, 2015 at 5:32 PM, Imran Shah <imran_643@hotmail.com> wrote:

> Dear Listers,
> Does anyone have a written procedure for Forward Planning Breast/Chest
> Wall for Eclipse TPS that you would be willing to share? Also, what is that
> max hot spot you would accept for a Breast or Chest Wall forward plan? Are
> there any published papers that you would recommend?
> Thanks
> Imran

Wednesday, January 21, 2015

Materials engineering classes at MIT

http://ocw.mit.edu/courses/materials-science-and-engineering/
Case studies in forensic metallurgy

Wednesday, January 14, 2015

Portal dosimetry tips (from med phys list server)

Date: Tue, 13 Jan 2015 07:04:21 -0800
From: Joseph Holmes <joseph.o.holmes@GMAIL.COM>
Subject: Varian Portal Dosimetry - Update

Thank you everyone for your responses. Here is a list of troubleshooting tips I received from the list and Varian support:

1. Calibrate at extended SID distance other than 100 cm up to 150 cm
2. Verify absolute dosimetry by creating a square 10x10 field in field plan but don't let MLC go into open square field
3. Try calibrating with SID of 105 from the Varian data diagonal profile
4. Verify acquisition technique is correct in AM Maintenance such as no sync beam pulse and resolution is correct for your license
5. Use commissioning files Varian provides CTB 87 (I think)and pay close attention to the dynamic chair it will tell you about DLG and leaf transmission
6. Tweak DLG and MLC transmission (should only be fine tuning)
7. Try calibrating without a diagonal profile since SRS uses small field sizes
8. Adjust Gamma criteria to 3% and 3 mm
9. Make sure you auto align your acquired images to remove detector offset from isocenter
10. Go into Beam Configuration and adjust output parameter from 100 MU to another value to slightly tweak a overall absolute offset

In my case I tried all of the above and eventually determined that my DLG and MLC could be increased slightly and my Gamma was increased from 2%/2mm to 3%/3mm as well as auto alignment of images. I can get all my plans to pass with 5%/5mm since some arcs slightly miss 3%/3mm passing criteria. Most of the failure is in high dose region. Hope this will help someone.

Joe

Training for cardiovascular endurance

http://running.competitor.com/2014/03/training/how-long-does-it-take-to-get-out-of-shape_70267

Many of your systems have to be built back up from the cellular level, synthesizing protein and increasing the number of mitochondria. The half-line of decline in mitochondrial enzyme is 12 days, which means 12 days of detraining requires 36 days of re-training to return to the same levels, according to Coyle.
Read more at http://running.competitor.com/2014/03/training/how-long-does-it-take-to-get-out-of-shape_70267#M6wQleb6j12yQYGc.99